TM-9-2330-331-14-P
SEMITRAILER, FLATBED: BREAKBULK/CONTAINER TRANSPORTER, 34 TON, M872A4
TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL WITH REPAIR PARTS AND SPECIAL TOOLS LISTS
DECEMBER 2005
TM-9-2330-331-14-P - Page 82 of 472
TM 9-2330-331-14&P
0012 00
Table 2. Organizational Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
BRAKES WILL NOT
RELEASE - Continued
3. Check for weak or broken brakeshoe
return spring.
Replace return spring
(WP 0034 00-1).
4. Check for proper service brake adjustment. Adjust service brakes
(WP 0038 00-4).
2.
BRAKES DO NOT
ENGAGE OR ARE WEAK
1. Perform air leakage test (WP 0044 00-1).
Tighten any loose fittings or
repair or replace fittings per
component (WP 0044 00-1).
2. Check for proper operation of
spring and relay valves.
Replace defective
spring and relay valves
(WP 0043 00-1).
3. Check for presence of grease on
brakeshoe linings.
1. Replace brakeshoes
(WP 0034 00-1) and defective
oil seals (WP 0037 00-1).
2.
Clean brakedrum.
4. Check for worn brakeshoe linings.
Replace brakeshoes if linings
are worn within 1/18 in.
(1.6 mm) of rivet heads
(WP 0034 00-1).
5. Check for proper service brake
adjustment.
Adjust service brakes
(WP 0038 00-4).
3.
BRAKES ENGAGE OR
RELEASE SLOWLY
1. Check for restrictions in air lines and
hoses.
Remove restriction or replace
defective air lines and hoses
(WP 0041 00-1).
2. Check for proper operation of
spring and relay valves.
Replace defective
spring and relay valves
(WP 0043 00-1).
3. Check for weak or broken brakeshoe
return spring.
Replace return spring
(WP 0034 00-1).
4. Check for proper operation of airbrake
chamber.
Replace defective airbrake
chamber (WP 0042 00-1).
0012 00-4
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